Impact plate assembly, impact type water-gas separator and water-cooled air compressor unit

Abstract

The present application discloses an impact plate assembly, an impact-type water-gas separator, and a water-cooled air compressor unit. The impact plate assembly includes multiple impact plates, each of which includes multiple channels running through the impact plate. Each channel includes an upstream channel having a channel inlet and a downstream channel having a channel outlet, and adjacent upstream channels form an impact portion. In at least some impact plates, baffles facing away from the impact portion are provided between adjacent downstream channels. The baffles of different impact plates are staggered, and each baffle extends out of the channel outlet. The channels of adjacent impact plates are staggered so that the channels of multiple impact plates form a flow channel. In adjacent impact plates, the channel outlet of the upstream impact plate faces the impact portion of the downstream impact plate, and the channel inlet of the downstream impact plate faces the baffle of the upstream impact plate and is separated by the baffle. With this arrangement, the baffle blocks compressed air containing condensed water, thereby improving the efficiency of water-gas separation.

Description

Technical Field

[0001] The present application relates to the technical field of air compressors, and in particular to an impact plate assembly, an impact-type water-gas separator, and a water-cooled air compressor unit. Background Art

[0002] The impactor-type moisture separator consists of a housing and an impact plate assembly. The housing contains a cavity, and the impact plate assembly, which includes multiple impact plates, is assembled within the cavity. Utilizing the principle of moisture impact, compressed air containing condensed water collides with the corresponding impact plates, separating the air and condensed water, thereby achieving moisture separation.

[0003] However, people expect the water-gas separator to have a higher separation efficiency so as to achieve better water-gas separation. Summary of the Invention

[0004] The purpose of the present application is to provide an impact plate assembly, an impact-type water-gas separator, and a water-cooled air compressor unit. The impact plate assembly can improve the water-gas separation efficiency of the impact-type water-gas separator, making it relatively high.

[0005] The present application provides an impact plate assembly for use in an impact-type water-gas separator. The impact plate assembly includes multiple impact plates, each impact plate includes multiple channels running through the impact plate. With reference to the flow direction of compressed air containing condensed water, each channel includes an upstream channel and a downstream channel, the upstream channel includes a channel inlet, the downstream channel includes a channel outlet, and adjacent upstream channels form an impact portion. In at least some impact plates, baffles are provided between adjacent downstream channels, the baffles are opposite to the impact portion, and the baffles between different impact plates are staggered, with each baffle extending from the channel outlet of the channel. The channels of adjacent impact plates are staggered so that the channels of multiple impact plates form a flow channel, and in adjacent impact plates, the channel outlet of the upstream impact plate faces the impact portion of the downstream impact plate, and the channel inlet of the downstream impact plate faces the baffle of the upstream impact plate and is separated by the baffle. With this arrangement, the compressed air containing condensed water can be blocked by the baffle of the upstream impact plate during the flow process. The blocking effect of the baffle improves the water-gas separation efficiency of the impact-type water-gas separator (or the impact plate assembly), making the water-gas separation efficiency relatively high.

[0006] Optionally, the multiple impact plates include a rear impact plate located farthest downstream, and baffles are provided on some or all of the impact plates except the rear impact plate, with the channels of all impact plates arranged in an array, and the baffles positioned between adjacent columns of channels; and / or, the channels of at least some of the impact plates are tilted downward relative to the flow direction of the compressed air containing condensate. With this arrangement, when baffles are provided on all impact plates except the rear impact plate, water vapor separation efficiency is improved. Because at least some of the channels are tilted downward relative to the flow direction of the compressed air containing condensate, they provide a greater contact area with the compressed air containing condensate, thereby improving water vapor separation efficiency.

[0007] Optionally, the multiple impact plates include a head-end impact plate located farthest upstream, wherein the channel of the head-end impact plate has an inclination angle α relative to the flow direction of the compressed air containing condensed water, and the channels of the other impact plates have an inclination angle β relative to the flow direction of the compressed air containing condensed water, wherein α>β, α<β, or α=β. With this arrangement, when comparing the efficiency of water-gas separation with pressure loss, α>β prioritizes avoiding greater pressure loss, while α<β prioritizes achieving higher water-gas separation efficiency, and α=β achieves a balance between the two.

[0008] Optionally, when α>β, 15 degrees ≤ α ≤ 45 degrees. With this arrangement, when α>β, α within the aforementioned range can ensure sufficient impact area between the compressed air and the impact plate, thereby improving the efficiency of water-gas separation. In particular, this approach combined with the provision of the baffles can achieve higher separation efficiency. However, this combination of the ratio of the sum of the flow areas of the aforementioned channels and the relationship between the number of channels can improve separation efficiency without causing excessive pressure drop, because the relationship between the number of channels of the head-end impact plate and the number of channels of the other impact plates does not further expand. Consequently, the impact plate assembly can achieve higher separation efficiency without causing excessive pressure loss.

[0009] Optionally, the multiple impingement plates include a head-end impingement plate located farthest upstream, wherein the head-end impingement plate has a greater number of channels than the number of channels of each of the other impingement plates, and / or the sum of the flow areas of the channels of each of the other impingement plates is greater than or equal to the sum of the flow areas of the channels of the head-end impingement plate. With this arrangement, the more channels there are, the more times the compressed air containing condensate is redirected. In particular, when the channels are tilted downward relative to the flow direction of the compressed air containing condensate, more redirections result in greater pressure loss. Having more channels in the head-end impingement plate than in the other impingement plates can reduce this pressure loss, but this can also reduce separation efficiency. The baffles can compensate for this reduced separation efficiency, thus enabling the aforementioned arrangement to achieve relatively high separation efficiency without incurring excessive pressure loss. Furthermore, the flow area allows a greater amount of compressed air to pass through the impingement plates without incurring excessive pressure loss, but at the expense of some separation efficiency. The baffles can compensate for this reduced separation efficiency. Therefore, the aforementioned arrangement, combined with the baffles, enables the impingement plate assembly to achieve high separation efficiency without incurring excessive pressure loss.

[0010] Optionally, the number of channels of the other impact plates is 1 / 2 to 1 / 6 of the number of channels of the first-end impact plate, and / or the number of channels of the other impact plates is equal. This arrangement can ensure higher separation efficiency and prevent excessive pressure loss.

[0011] Optionally, the ratio of the sum of the flow areas of the channels of each of the other impact plates to the sum of the flow areas of the channels of the head-end impact plate is A, where 1≤A≤1.2. In this configuration, A within the aforementioned range helps reduce pressure loss, thereby preventing excessive pressure loss. Furthermore, the baffles can improve the efficiency of water-gas separation. Therefore, the selection of channel area combined with the design of the baffles can achieve higher water-gas separation efficiency, further helping to reduce pressure loss, thereby preventing excessive pressure loss.

[0012] Optionally, the plurality of impact plates include a head-end impact plate located most upstream, the head-end impact plate having a greater number of channels than the other impact plates, and the ratio of the sum of the flow areas of the channels of each of the other impact plates to the sum of the flow areas of the channels of the head-end impact plate is B, with 0.8≤B<1. With this arrangement, considering only B within the aforementioned range compared to 1≤A≤1.2, pressure loss may be greater. However, combined with the fact that the head-end impact plate has a greater number of channels than the other impact plates, the number of compressed air diversions may be reduced without further causing excessive pressure loss. The combination of these two factors also allows the impact plate assembly to avoid excessive pressure loss and achieve a higher compressed air flow rate. Finally, the greater number of channels in the head-end impact plate also contributes to improved initial separation efficiency.

[0013] Optionally, the baffle includes a baffle body and baffle sides, wherein the baffle body extends toward the channel inlet, and the baffle sides extend toward both sides of the baffle body to increase the area shielding the channel inlet. With this arrangement, since the baffle body extends toward the channel inlet and the baffle sides extend toward both sides of the baffle body, compressed air containing condensed water can be better blocked from flowing into the channel through the channel inlet and toward the downstream impact plate, thereby achieving higher water-gas separation efficiency.

[0014] Optionally, the impact plate includes an impact plate body, and the baffle side edges are parallel to the impact plate body; or the baffle side edges are curved toward the impact plate body; or, in at least one impact plate, a portion of the baffle side edges are parallel to the impact plate body, while another portion of the baffle side edges are curved toward the impact plate body. With such an arrangement, whether the baffle side edges are parallel to the impact plate body, or curved toward the impact plate body, or some baffle side edges are parallel to the impact plate body and others are curved toward the impact plate body, the water-gas separation efficiency can be improved. In comparison, the baffle side edges being parallel to the impact plate body makes the impact plate easier to manufacture, while the baffle side edges curving toward the impact plate body are more conducive to the flow of compressed air containing condensed water, reducing pressure loss, and at the same time, the blocked condensed water is less likely to be carried back downstream by the airflow.

[0015] Optionally, in adjacent impact plates, the channel outlet of the upstream impact plate includes an outlet flange extending outward from the channel, and the channel inlet of the downstream impact plate includes an inlet flange extending outward from the channel inlet. The outlet flange and the inlet flange are separated to form an airflow channel, and the two flanges extend in opposite directions. In this arrangement, because the outlet flange and the inlet flange are separated to form an airflow channel and extend in opposite directions, the outlet flange and the inlet flange jointly block compressed air containing condensed water, thereby improving water-gas separation efficiency.

[0016] Optionally, the impact plate includes an impact plate body, and the outlet flange and inlet flange are parallel to the plane of the respective impact plate bodies; alternatively, the outlet flange and inlet flange are curved toward the respective impact plate bodies; alternatively, in at least adjacent impact plates, a portion of the outlet flange and inlet flange are parallel to the respective impact plate bodies, while another portion of the outlet flange and inlet flange are curved toward the respective impact plate bodies. With such an arrangement, whether the outlet flange and inlet flange are parallel to the impact plate body, or curved toward the impact plate body, or whether some are parallel to the impact plate body and others are curved toward the impact plate body, the water-gas separation efficiency can be improved. In comparison, having the outlet flange and inlet flange parallel to the impact plate body makes the impact plate easier to manufacture, while having the outlet flange and inlet flange curved toward the impact plate body facilitates the flow of compressed air containing condensed water, reduces pressure loss, and makes it less likely that condensed water will be carried back downstream by the airflow.

[0017] In another aspect, embodiments of the present application disclose an impact-type moisture separator. The separator comprises a housing and the aforementioned impact plate assembly. The housing includes a separation zone, a water collection zone communicating with the separation zone, and an air outlet and an air inlet communicating with the interior of the separation zone and the exterior of the housing. The impact plate assembly is located within the separation zone. With this configuration, the impact-type moisture separator exhibits at least the benefits of the impact plate assembly, which will not be further elaborated.

[0018] Optionally, the impact-type water-gas separator includes a controller, a liquid level sensor arranged in the water collection area, and a drain valve connected to the water collection area; when the liquid level in the water collection area is equal to the water level detected by the liquid level sensor, the controller controls the drain valve to stop draining after a preset time so that a preset amount of water remains in the water collection area; or, the controller controls the drain valve to drain water every preset time, and when the liquid level in the water collection area is equal to the liquid level detected by the liquid level sensor, the controller controls the drain valve to stop draining and leaves a preset amount of water in the water collection area; or, the impact-type water-gas separator includes a controller, a first liquid level sensor and a second liquid level sensor arranged in the water collection area, and a drain valve connected to the water collection area, and when the liquid level in the water collection area is equal to the liquid level detected by the first liquid level sensor, the controller controls the drain valve to drain water, and when the liquid level in the water collection area is equal to the liquid level detected by the second liquid level sensor, the controller controls the drain valve to stop draining. With the above arrangement, regardless of the drainage method used, since the water collection area and the separation area are connected, and a predetermined amount of water remains in the water collection area after drainage, separated compressed air will not be discharged. Therefore, lossless drainage can be achieved, and the drain valve can be a lossless discharge valve, reducing the cost of the unit. In addition, when the condensate is discharged, since the space above the liquid level in the water collection area is connected to the separation area, the pressure change caused by the expansion of air above the liquid level due to the drop in the liquid level during drainage will not cause air lock.

[0019] Optionally, the housing includes an upper housing and a lower housing, the upper housing being provided with the separation zone and the air outlet, and the lower housing being assembled with the upper housing to enclose the water collection zone. With this arrangement, since the housing includes the upper housing and the lower housing, and the upper and lower housings are provided with the aforementioned structure, the upper and lower housings can be cast separately and then assembled into one piece, thus facilitating manufacturing of the housing.

[0020] In another aspect, embodiments of the present application disclose a water-cooled air compressor unit. The water-cooled air compressor unit includes a heat exchanger, a secondary main engine, and any of the aforementioned impact-type water-gas separators. The heat exchanger discharges compressed air containing condensed water, which enters the separation zone through the air inlet for separation into gas and condensed water. The condensed water flows into the water collection zone, and the gas enters the secondary main engine. With this configuration, the water-cooled air compressor unit at least exhibits the beneficial effects of the water-gas separator.

[0021] Optionally, the impact-type water-gas separator is assembled on the heat exchanger as the cold end head of the heat exchanger, so that the air inlet communicates with the interior of the heat exchanger and the air outlet is connected to the inlet of the secondary main engine. With this arrangement, the impact-type water-gas separator of the present application not only serves as a head but also has a moisture function, omitting a section of pipeline connection. At the same time, the air outlet of the impact-type water-gas separator is connected to the inlet of the secondary main engine, shortening the pipeline length as much as possible, reducing gas line pressure loss, and improving the energy efficiency of the unit.

[0022] Optionally, the water-cooled air compressor unit includes a unit chassis, and the heat exchanger is directly mounted on the unit chassis. This arrangement allows the cooler (such as the shell-and-tube heat exchanger) to be directly placed on the unit chassis, lowering the center of gravity of the entire unit and reducing the risk of vibration caused by the high center of gravity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of a first impact plate assembly according to an embodiment of the present application;

[0024] Figure 2 yes Figure 1 A partial enlarged view of part A;

[0025] Figure 3 yes Figure 1 A top view of the strike plate assembly is shown;

[0026] Figure 4 is a schematic diagram of an intermediate impact plate according to an embodiment of the present application;

[0027] Figure 5 yes Figure 4 A top view of the strike plate is shown;

[0028] Figure 6 yes Figure 4 a cross-sectional view of the strike plate shown;

[0029] Figure 7 is a cross-sectional view of a head-end impact plate located most upstream according to an embodiment of the present application;

[0030] Figure 8 is an exploded view of an impact-type water-gas separator according to an embodiment of the present application;

[0031] Figure 9 is a cross-sectional view of an impact-type water-gas separator according to an embodiment of the present application;

[0032] Figure 10 This is a schematic diagram of the assembly of the impact-type water-gas separator of the present application with a heat exchanger and a secondary host when the separator is applied to a water-cooled air compressor unit;

[0033] Figure 11 is a schematic diagram of a second impact plate according to an embodiment of the present application;

[0034] Figure 12 is a schematic diagram showing a second impact plate assembly according to an embodiment of the present application. DETAILED DESCRIPTION

[0035] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, identical numbers in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of devices consistent with certain aspects of the present application, as detailed in the appended claims.

[0036] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. Unless otherwise defined, technical or scientific terms used in this application should have the ordinary meaning understood by a person of ordinary skill in the art to which this application belongs. The terms "first," "second," and similar words used in this specification and claims do not denote any order, quantity, or importance, but are simply used to distinguish different components. Similarly, the terms "a" or "an" and similar words do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "plurality" or "several" mean two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and / or "upper" and similar words are for convenience only and are not intended to limit to a single position or spatial orientation. The terms "include," "comprising," and similar words mean that the elements or objects preceding the term "include" or "comprising" include the elements or objects listed after the term and their equivalents, and do not exclude other elements or objects. The terms "connected," "connected," and similar words are not limited to physical or mechanical connections and can include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a," "an," "said," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0037] See also Figure 1 、 Figure 2 and Figure 3The impact plate assembly 10 of the present application is applied to an impact-type water-gas separator, and includes multiple impact plates (for the convenience of description, with reference to the flow direction of the compressed air containing condensed water, the impact plates are divided into a head impact plate 101 located at the upstream, a tail impact plate 102 located at the downstream, and an intermediate impact plate 103 located between the head impact plate 101 and the tail impact plate 102). Figures 1 to 3 Four impact plates are shown, including a head impact plate 101, a tail impact plate 102, and two intermediate impact plates 103. It will be appreciated by those skilled in the art that the number of impact plates is not limited. Each impact plate (head impact plate 101, tail impact plate 102, and intermediate impact plate 103) includes a plurality of channels 11 passing through the impact plate. With reference to the flow direction of the compressed air containing condensed water, each channel 11 includes an upstream channel 111 and a downstream channel 112. Please refer to Figure 6 and Figure 7 Combined with Figure 4 and Figure 5 , the technicians can understand that the upstream channel 111 and the downstream channel 112 are based on the impact plate body 14 of the impact plate and the flow direction of the compressed air containing condensed water ( Figure 6 and Figure 7 The black arrows (showing the compressed air flow direction) split the channel 11 into two parts. Accordingly, the upstream channel 111 and the downstream channel 112 are each surrounded by a plurality of side walls. Each channel 11 also includes a through hole 113 that penetrates the impact plate body 14 of the impact plate. Each upstream channel 111 includes an impact portion next to it. The impact portion is the part where the compressed air containing condensed water impacts the impact plate. In the embodiment of the present application, Figure 4 As shown, the channels 11 are arranged in an array, and the impact portion includes an impact portion 12 located between adjacent rows and an impact portion located between adjacent channels 11 in the same column (for ease of understanding, the impact portion is Figure 4 For the convenience of describing the relevant configuration of the baffle 13, the impact portion of this application mainly refers to the impact portion 12. In at least some impact plates, a baffle 13 is provided between adjacent downstream channels 112. The baffle 13 faces away from the impact portion 12, and the baffle 13 extends out of the channel outlet 1121 of the downstream channel 112 (that is, extends out of the channel outlet 1121 of the channel 11). In particular, Figure 5 and Figure 3 As shown. The channels 11 of adjacent impact plates (the first impact plate 101 is adjacent to the first intermediate impact plate 103, the first intermediate impact plate 103 is adjacent to the second impact plate 103, and the second intermediate impact plate 103 is adjacent to the tail impact plate 102) are staggered so that the corresponding channels 11 of multiple impact plates form a curved flow channel. The flow channel is a channel for the flow of compressed air containing condensed water. Figure 2 and Figure 3The dashed arrows in the figure illustrate a portion of the flow path and the flow direction of a portion of the compressed air containing condensed water. Of the adjacent impact plates, the channel outlet 1121 of the upstream impact plate faces the impact portion 12, while the channel inlet 1111 of the downstream impact plate faces the baffle 13 and is separated by the baffle 13. The upstream and downstream impact plates are relative concepts. For example, the leading impact plate 101 is the upstream impact plate relative to the first intermediate impact plate 103, and the second intermediate impact plate 103 is the upstream impact plate relative to the trailing impact plate 102.

[0038] Please continue reading Figure 2 and Figure 3 Combined with Figure 1 The working process of the above-mentioned impact plate assembly 10 is as follows.

[0039] like Figure 2 and Figure 3As shown, a portion of the compressed air containing condensed water collides with the impact portion 12 of the first-end impact plate 101, and the first water-gas separation is performed; since the channels 11 between adjacent impact plates are staggered, the other portion passes through the channel inlet 1111 of the channel 11 of the first-end impact plate 101 and flows through the channel outlet 1121 to the impact portion 12 of the first intermediate impact plate 103, and the second water-gas separation is performed. After colliding with the first intermediate impact plate 103, a portion of the compressed air containing condensed water is rebounded and flows from the edge of the downstream channel 112 of the first-end impact plate 101 and the edge of the upstream channel 111 of the first intermediate impact plate 103 to the channel 11 adjacent to the impact portion 12; after passing through the interior of the channel 11 of the first intermediate impact plate 103 from the channel inlet 1111, it flows from the channel outlet 1121 to the impact portion 12 of the second intermediate impact plate 103 and is subjected to the third water-gas separation. After colliding with the impact portion 12 of the second intermediate impact plate 103, a portion of the compressed air containing condensed water is rebounded by the impact portion 12, passes between the edge of the downstream channel 112 of the channel 11 of the second intermediate impact plate 103 and the edge of the second intermediate impact plate, and flows to the channel 11 of the second intermediate impact plate 103 adjacent to the impact portion 12. Here, since the first intermediate impact plate is provided with a baffle 13, and the baffle 13 extends out of the channel outlet 1121, specifically, the end of the baffle 13 away from the impact plate body 14 extends out of the channel outlet 1121. For example, in the embodiment described later, the baffle side 132 extends out of the channel outlet 1121. Therefore, This part of the compressed air containing condensed water will be blocked by the baffle 13 and the amount entering the channel 11 of the second intermediate impact plate 103 will be reduced. Based on this principle, the compressed air containing condensed water continues to flow and will be blocked by the baffle 13 of the second intermediate impact plate 103 and the amount entering the channel 11 of the tail impact plate 102 will be reduced. Similarly, the compressed air containing condensed water can be blocked by the baffle 13 of the upstream impact plate (the second intermediate impact plate 103) during the flow process. The blocking effect of the baffle 13 improves the water-gas separation efficiency of the impact-type water-gas separator (or the impact plate assembly 10), making the water-gas separation efficiency relatively high.

[0040] See also Figure 3 and Figure 12 In some embodiments, the width of the impact portion 12 is W1, and the width of the channel 11 is W2, where W1 = (1-1.5) W2, for example, W1 = W2, W1 = 1.1W2, W1 = 1.2W2, W1 = 1.3W2, W1 = 1.4W2, W1 = 1.5W2, etc., to ensure that the width of the impact portion 12 is greater than the width of the channel 11. In this manner, when the width of the impact portion 12 and the width of the channel 11 are within the above ranges, sufficient impact area can be ensured between the compressed air discharged from the upstream impact plate and the impact portion 12, thereby improving the efficiency of water-gas separation.

[0041] Figure 1 、 Figure 2 and Figure 3 The diagram shows that the rear impact plate 102 also includes a baffle 13. In this way, the intermediate impact plate 103 and the rear impact plate 102 can be manufactured using a set of molds. It is understood by those skilled in the art that after passing through the rear impact plate 102, the compressed air containing condensed water will no longer undergo water vapor separation through impact. Therefore, the rear impact plate 102 may not be provided with the baffle 13. It is understood by those skilled in the art that among the impact plates constituting the impact plate assembly 10, in addition to the rear impact plate 102, some or all impact plates are provided with the baffle 13, including the following situations: 1) Only the intermediate impact plate 103 is provided with the baffle 13, for example, Figures 1 to 3 The diagrams illustrate the following scenarios: 1) only two intermediate impact plates 103 are equipped with the baffles 13; 2) all impact plates (the leading impact plate 101 and all intermediate impact plates 103) except the trailing impact plate 102 are equipped with the baffles 13; 3) the leading impact plate 101 and some of the intermediate impact plates 103 are equipped with the baffles 13; and 4) some of the intermediate impact plates 103 are equipped with the baffles 13. In this configuration, when all impact plates except the trailing impact plate 102 are equipped with the baffles 13, the water-gas separation efficiency is higher. Furthermore, when the leading impact plate 101 is not equipped with the baffles 13, and only the intermediate impact plates 103 are equipped with the baffles 13, there is no baffle 13 between the leading impact plate 101 and the first intermediate impact plate 103, resulting in a relatively lower water-gas separation efficiency.

[0042] In this application, the channels 11 are arranged in an array, and the baffles 13 are located between adjacent columns of channels 11, as shown more clearly. Figure 4 As shown, Figure 4 Four rows of channels 11 are shown, with a total of three baffles 13. This arrangement not only facilitates the manufacture of the impact plate, but also facilitates the baffles 13 to play a blocking role.

[0043] In some embodiments, see Figure 6 and Figure 7 Combined with Figure 4 and Figure 9, among all the impact plates, the channels 11 of at least some of the impact plates are tilted downward relative to the flow direction of the compressed air containing condensed water. In the embodiment of the present application, the channels 11 of the head-end impact plate 101, the tail-end impact plate 102 and the middle impact plate 103 are all tilted downward relative to the flow direction of the compressed air containing condensed water. Of course, it is also possible that some channels 11 are parallel to the flow direction of the compressed air containing condensed water, while other channels 11 are tilted downward relative to the flow direction of the compressed air containing condensed water. With such an arrangement, since at least some of the channels 11 are tilted downward relative to the flow direction of the compressed air containing condensed water, there is more contact area with the compressed air containing condensed water, and therefore, the efficiency of water vapor separation is high. In particular, the inclined arrangement of the channels 11 combined with the baffle 13 can achieve a high efficiency of water vapor separation.

[0044] See also Figure 7 In some embodiments, the channel 11 of the head end impact plate 101 is inclined at an angle α to the flow direction of the compressed air containing condensed water. Figure 6 , the inclination angle of the channels 11 of the other impact plates (the middle impact plate 103 and the tail impact plate 102) relative to the flow direction of the compressed air containing condensed water is β, α>β. With this arrangement, since α>β, the compressed air collides relatively more with the inner wall of the channel 11 of the head impact plate, and relatively less with the inner wall of the channel 11 of the other impact plates, thereby ensuring that the compressed air does not cause a large pressure loss. In this way, by setting the inclination angles α and β, the pressure loss of the compressed air in the flow of water-gas separation is reduced, sacrificing part of the separation efficiency. However, the baffle 13 can compensate for the separation efficiency. Therefore, the inclination angles α and β combined with the baffle 13 can find a balance between pressure loss (also known as pressure loss in the industry) and separation efficiency, resulting in a higher separation efficiency and no large pressure loss. Of course, if the focus is on higher efficiency of water-gas separation, the relationship is α<β. It can also be set to α=β, so that the efficiency of water-gas separation and the pressure loss can be taken into account. This method combined with the baffle 13 can achieve higher water vapor separation efficiency.

[0045] In some embodiments, when α>β, 15 degrees ≤ α ≤ 45 degrees, and a further range of α satisfies 26 degrees ≤ α ≤ 45, for example, 15 degrees, 16 degrees, 17 degrees, 18 degrees, 19 degrees, 20 degrees, 25 degrees, 26 degrees, 27 degrees, 28 degrees, 29 degrees, 30 degrees, 31 degrees 32 degrees, 33 degrees, 34 degrees, 35 degrees, 36 degrees, 37 degrees, 38 degrees, 39 degrees, 40 degrees, 41 degrees, 42 degrees, 43 degrees, 44 degrees or 45 degrees, etc. With such an arrangement, in the case where α>β, the α within the above range can ensure that the compressed air and the impact plate have sufficient collision area, thereby improving the efficiency of water vapor separation. In particular, this approach combined with the arrangement of the baffle 13 can achieve higher separation efficiency. However, this ratio to the sum of the flow areas of the aforementioned channels and the relationship between the number of channels can improve the separation efficiency without causing excessive pressure drop, because the relationship between the number of channels of the head-end impact plate and the number of channels of other impact plates will not be further expanded. As a result, the impact plate assembly can obtain a higher separation efficiency without causing excessive pressure loss.

[0046] See also Figure 9 Combined with Figure 1 、 Figure 4 、 Figure 6 and Figure 7 , the number of channels 11 of the first end impact plate 101 is greater than the number of channels 11 of each other impact plate. Figure 1 As shown, the first end impact plate 101 includes 12 channels 11. The number of channels 11 of the other impact plates (the middle impact plate 103 or the rear end impact plate 102) is less than 12, such as Figure 4 、 Figure 6 and Figure 9 The illustrated intermediate impact plate 103 and the trailing impact plate 102 each include four channels 11. With this arrangement, the more channels 11 there are, the more times the compressed air containing condensate is redirected. In particular, when the channels 11 are tilted downward relative to the flow direction of the compressed air containing condensate, more redirections result in greater pressure loss. Having more channels 11 on the leading impact plate 101 than on the other impact plates can reduce this pressure loss, but this can also reduce separation efficiency. The baffles 13 can compensate for this reduced separation efficiency, resulting in a relatively high separation efficiency without causing excessive pressure loss.

[0047] See also Figure 9 Combined with Figure 1 、 Figure 4 、 Figure 6 and Figure 7In some embodiments, the sum of the flow areas of the channels 11 of each of the other impact plates (the intermediate impact plate 103 or the rear impact plate 102) is greater than or equal to the sum of the flow areas of the channels 11 of the head impact plate 101. With this arrangement, the flow area allows more compressed air to pass through the impact plates without causing excessive pressure loss, but this sacrifices some separation efficiency. The baffle 13 can compensate for this separation efficiency. Therefore, the above arrangement combined with the baffle 13 can enable the impact plate assembly 10 to have a higher separation efficiency without causing excessive pressure loss. Furthermore, the number of channels 11 in the head impact plate 101 is greater than the number of channels 11 in the other impact plates, which can also achieve a higher initial separation efficiency. Combined with the staggered spacing of the channels 11 between adjacent impact plates and either the flow area or the inclination angle of the channels 11, this prevents significant pressure loss.

[0048] In some embodiments, the number of channels 11 of the other impact plates (the tail impact plate 102 and the middle impact plate 103) is 1 / 2 to 1 / 6 of the number of channels 11 of the head impact plate 101. This arrangement can better ensure a higher separation efficiency and ensure that excessive pressure loss will not occur. In particular, this approach combined with the baffle 13 can better ensure a higher separation efficiency and prevent excessive pressure loss. In a further embodiment, the number of channels of the other impact plates (the tail impact plate 102 and the middle impact plate 103) is equal. This arrangement not only facilitates the manufacture of the impact plate assembly 10, but also achieves a higher separation efficiency and does not cause excessive pressure loss.

[0049] In one embodiment, the ratio of the sum of the flow areas of the channels 11 of each of the other impact plates (for example, the ratio of the sum of the flow areas of the channels of the first intermediate impact plate to the sum of the flow areas of the first impact plate 101) to the sum of the flow areas of the channels 11 of the first impact plate 101 is A, where 1≤A≤1.2. In this configuration, A within the aforementioned range helps reduce pressure loss, thereby preventing excessive pressure loss. Furthermore, the baffle 13 can improve the efficiency of water-gas separation. Therefore, the selection of the channel area combined with the design of the baffle can enhance water-gas separation efficiency, further helping to reduce pressure loss, and preventing excessive pressure loss.

[0050] In another embodiment, the plurality of impact plates include a head impact plate 101 located most upstream, wherein the head impact plate 101 has a greater number of channels than the other impact plates (e.g., the intermediate impact plate 103 or the rear impact plate 102), and the ratio of the sum of the flow area of ​​the channels of each of the other impact plates to the sum of the flow area of ​​the channels of the head impact plate is B, where 0.8≤B<1. With this arrangement, considering only B within the aforementioned range compared to 1≤A≤1.2, pressure loss may be greater. However, the fact that the head impact plate has a greater number of channels than the other impact plates can reduce the number of times the compressed air is diverted without further causing excessive pressure loss. The combination of the two also ensures that the impact plate assembly does not cause excessive pressure loss and that the compressed air has a higher flow rate. Finally, the greater number of channels in the head impact plate also helps improve initial separation efficiency.

[0051] See also Figure 1 Combined with Figure 3 The channels 11 of any adjacent impact plates (the first impact plate 101 and the first intermediate impact plate 103, the first intermediate impact plate 103 and the second intermediate impact plate 103, and the second intermediate impact plate 103 and the rear impact plate 102) are adjacent) are staggered. This arrangement allows the channels 11 of any adjacent impact plates to be staggered, and based on the relative positional relationship between the impact portions 12 and the baffles 13 and the channels 11, the impact portions 12 and baffles 13 of each impact plate are also staggered. Consequently, compressed air containing condensed water is blocked by multiple impacts as it passes through the flow channel, further improving water-gas separation efficiency.

[0052] See also Figure 4 and Figure 5 Combined with Figure 1 、 Figure 2 and Figure 3 In some embodiments, the baffle 13 includes a baffle body 131 and baffle sides 132. The baffle body 131 extends toward the channel inlet 1111, and the baffle sides 132 extend toward both sides of the baffle body 131 to increase the area shielding the channel inlet 1111. This configuration, because the baffle body 131 extends toward the channel inlet 1111 and the baffle sides 132 extend toward both sides of the baffle body 131, can better prevent compressed air containing condensed water from flowing through the channel inlet 1111 into the channel 11 and toward the downstream impact plate, thereby achieving higher water-gas separation efficiency.

[0053] See also Figure 4 and Figure 5 Combined with Figure 1 、 Figure 2 and Figure 3The impact plates (e.g., the leading impact plate 101, the trailing impact plate 102, and the intermediate impact plate 103) include an impact plate body 14. In this case, the baffle 13 is connected to the impact plate body 14, or can be considered to extend from the impact plate body 14. The upstream channel 111 and the downstream channel 112 are located on either side of the impact plate body 14. The baffle side edges 132 are parallel to the impact plate body 14.

[0054] See also Figure 11 and Figure 12 , Figure 11 and Figure 12 A second strike plate assembly 10 is disclosed. Compared to the first strike plate assembly, the second strike plate assembly differs only in the shape of a portion of the baffle side edges 132. As described below, the shape of a portion of the flanges is also different. In this strike plate assembly 10, a portion of the baffle side edges 132 of at least one strike plate is parallel to the strike plate body 14, while another portion of the baffle side edges 132 is curved toward the strike plate body 14. Of course, those skilled in the art will appreciate that in some embodiments, all of the baffle side edges 132 may be curved toward the strike plate body 14. With such an arrangement, whether the baffle side edges 132 are parallel to the impact plate body 14, or the baffle side edges 132 are curved toward the impact plate body 14 in an arc shape, or some are parallel to the impact plate body 14 and others are curved toward the impact plate body 14, the water vapor separation efficiency can be improved. In comparison, the baffle side edges 132 being parallel to the impact plate body 14 makes the impact plate easier to manufacture, while the baffle side edges 132 being curved toward the impact plate body 14 is more conducive to the flow of compressed air containing condensed water, reduces pressure loss, and at the same time, the blocked condensed water is less likely to be carried back downstream by the airflow.

[0055] See also Figure 4 and Figure 5 Combined with Figure 1 、 Figure 2 and Figure 3 In some embodiments, among adjacent impact plates, the channel outlet 1121 of the upstream impact plate includes an outlet flange 1122 extending toward the outside of the channel 11, and the channel inlet 1111 of the downstream impact plate includes an inlet flange 1112 extending toward the outside of the channel inlet 1111. Figure 1 、 Figure 2 and Figure 3 Although only one outlet flange 1122 and one inlet flange 1112 are marked, it can be understood by technicians that Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, the channel inlet 1111 of each channel 11 is provided with an inlet flange 1112 and the channel outlet 1121 of each channel 11 is provided with an outlet flange 1122. The outlet flange 1122 is separated from the inlet flange 1112 to form an airflow channel and the extension directions of the two are opposite. The outlet flange 1122 is separated from the inlet flange 1112 so that the compressed air containing condensed water can pass through and enter the channel 11 (the airflow channel is part of the flow channel), and then flow to the impact portion 12 of the downstream impact plate. The extension direction of the outlet flange 1122 is opposite to the extension direction of the inlet flange 1112. For example, in Figure 3 In the figure, with reference to the front, back, left, and right directions, one of the outlet flange 1122 and the inlet flange 1112 extends upward, while the other extends downward. This arrangement separates the outlet flange 1122 and the inlet flange 1112 from each other to form an airflow channel, and their extension directions are opposite. Thus, the outlet flange 1122 and the inlet flange 1112 jointly block the compressed air containing condensed water, thereby improving the water-gas separation efficiency.

[0056] See also Figure 4 and Figure 5 Combined with Figure 1 、 Figure 2 and Figure 3 The impact plate includes an impact plate body 14, and the outlet flange 1122 and the inlet flange 1112 are parallel to the plane where the impact plate body 14 is located. Alternatively, please refer to Figure 11 and Figure 12 In at least adjacent impact plates, a portion of the outlet flange 1122 and the inlet flange 1112 is parallel to the respective impact plate body 14, while another portion of the outlet flange 1122 and the inlet flange 1112 is curved toward the respective impact plate body 14. Alternatively, the outlet flange 1122 and the inlet flange 1112 are curved toward the respective impact plate body 14. With such an arrangement, whether the outlet flange 1122 and the inlet flange 1112 are parallel to the impact plate body 14, or the outlet flange 1122 and the inlet flange 1112 are bent toward the impact plate body 14, or some are parallel to the impact plate body 14 and others are bent toward the impact plate body 14, the water-gas separation efficiency can be improved. In comparison, the outlet flange 1122 and the inlet flange 1112 are parallel to the impact plate body 14, which makes the impact plate easier to manufacture, and the outlet flange 1122 and the inlet flange 1112 are bent toward the impact plate body 14, which is more conducive to the flow of compressed air containing condensed water, reduces pressure loss, and at the same time, the condensed water is less likely to be carried back downstream by the airflow.

[0057] The various features of the above-mentioned impact plate assembly 10 can be combined accordingly. For example, when all the above-mentioned features are included, the structure of the impact plate assembly 10 is as shown in the figure. For example, the relationship between the flow area of ​​the channel 11 of the first-end impact plate 101 and the flow area of ​​the channel 11 of other impact plates is combined with the baffle 13, etc. These combinations can utilize the baffle 13 to compensate for the efficiency of water vapor separation, and ultimately make the water vapor separation efficiency of the impact plate assembly 10 high without causing large pressure loss.

[0058] Please continue reading Figure 8 and Figure 9 , based on the structures of the various impact plate assemblies 10 mentioned above. The embodiment of the present application also discloses an impact-type water-gas separator 100. The impact-type water-gas separator 100 includes a shell 20 and any one of the impact plate assemblies 10 mentioned above. The shell 20 includes a separation zone 201, a water collection zone 202 connected to the separation zone 201, an air outlet 203 and an air inlet 204 connected to the inside of the separation zone 201 and the outside of the shell 20; the impact plate assembly 10 is located in the separation zone 201. The air inlet 204 is used to connect to a heat exchanger (for example, a shell and tube heat exchanger). The air outlet 203 is used to discharge the compressed air after water vapor separation, and the condensed water after water vapor separation is discharged into the water collection zone 202. With such a configuration, the impact-type water-gas separator 100 at least has the beneficial effects of the impact plate assembly 10, which will not be repeated.

[0059] See also Figure 9In some embodiments, the impact-type water-gas separator 100 includes a controller, a liquid level sensor disposed in the water collection area 202, and a drain valve 40 connecting the interior of the water collection area 202 and the exterior of the housing 20; when the liquid level in the water collection area 202 is equal to the water level detected by the liquid level sensor 30, the controller controls the drain valve 40 to stop draining water after a preset time, so that some water remains in the water collection area 202. For example, the total volume of the water collection area 202 is 2.5L, and the liquid level height of 1.5L measured from the bottom of the water collection area 202 can be defined as the water level detected by the liquid level sensor 30. A single drainage is approximately 1L, and the time required to drain 1L can be measured experimentally as the preset time. In this example, 1.5L of water will remain in the water collection area 202. As a variation of the above embodiment, the controller controls the drain valve to drain water at preset time intervals, and when the liquid level in the water collection area 202 is equal to the detected liquid level of the liquid level sensor, controls the drain valve to stop draining and leaves a preset amount of water in the water collection area 202. In this embodiment, the drainage time and the preset time interval can also be obtained based on experiments, and the preset amount of water is selected based on the situation. As another variation of the above embodiment, the impact-type water-gas separator includes a controller, a first liquid level sensor and a second liquid level sensor provided in the water collection area, and a drain valve connected to the water collection area. When the liquid level in the water collection area is equal to the detected liquid level of the first liquid level sensor, the controller controls the drain valve to drain water, and when the liquid level in the water collection area is equal to the detected liquid level of the second liquid level sensor, controls the drain valve to stop draining water.

[0060] As described above, regardless of the drainage method used, since the water collection area 202 is connected to the separation area 201 and a predetermined amount of water remains in the water collection area 202 after drainage, the separated compressed air will not be discharged. Therefore, lossless drainage can be achieved. The drain valve 40 can be a lossless discharge valve, reducing the cost of the unit. In addition, when the condensate is discharged, since the space above the liquid level of the water collection area 202 is connected to the separation area 201, the pressure change caused by the expansion of air above the liquid level due to the drop in the liquid level during drainage will not cause air lock.

[0061] See also Figure 9 Combined with Figure 8In some embodiments, the housing 20 includes an upper housing 205 and a lower housing 206. The upper housing 205 is provided with the separation zone 201 and the air outlet 203. The lower housing 206 is assembled with the upper housing 205 to form the water collection area 202. Enclosing the water collection area 202 includes: 1) the lower housing 206 includes a water accumulation cavity, which is covered by the upper housing 205 to form the water collection area 202; and 2) the water accumulation cavities of the upper housing 205 and the lower housing 206 are combined to form the water collection area 202. In the above embodiment, the air inlet 204 is provided on the upper housing 205. It will be appreciated by those skilled in the art that in some embodiments, the upper housing 205 and the lower housing 206 may also jointly form the air inlet 204. In this arrangement, since the shell 20 includes an upper shell 205 and a lower shell 206 and the upper shell 205 and the lower shell 206 are correspondingly provided with the structure, the upper shell 205 and the lower shell 206 can be cast separately and then assembled into one body, so that the shell 20 is easy to manufacture.

[0062] On the other hand, see Figure 10 , the embodiment of the present application also discloses a water-cooled air compressor unit. It includes a heat exchanger 200, a secondary main unit 300 and any of the aforementioned impact-type water-gas separators 100. The heat exchanger discharges compressed air containing condensed water, and its structure is not limited. For example, the heat exchanger 200 is a shell and tube heat exchanger in the embodiment of the present application. The compressed air containing condensed water enters the separation area 201 through the air inlet 204 to separate into gas and condensed water. The condensed water flows into the water collection area 202, and the gas enters the secondary main unit 300. With such a configuration, the water-cooled air compressor unit at least has the beneficial effects of the water-gas separator 100.

[0063] Please continue reading Figure 10 Combined with Figure 9 In some embodiments, the impact-type water-gas separator 100 is assembled on the heat exchanger 200 as the cold-end head of the heat exchanger 200, so that the air inlet 204 communicates with the interior of the heat exchanger 200, and the air outlet 203 interfaces with the inlet of the secondary main engine 300. With this configuration, the impact-type water-gas separator 100 of the present application not only serves as a head but also has a moisture function, omitting a section of pipeline connection. At the same time, the air outlet 203 of the impact-type water-gas separator 100 interfaces with the inlet of the secondary main engine 300, shortening the pipeline length as much as possible, reducing gas line pressure loss, and improving the energy efficiency of the unit.

[0064] Please continue reading Figure 10In some embodiments, the water-cooled air compressor unit includes a unit chassis 400, and the heat exchanger 200 is directly mounted on the unit chassis 400. This arrangement allows the heat exchanger 200 (such as the shell-and-tube heat exchanger) to be directly placed on the unit chassis 400, lowering the center of gravity of the entire unit and reducing the risk of vibration caused by the high center of gravity.

[0065] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. An impact plate assembly, used in an impact-type water-gas separator, characterized in that: The invention comprises a plurality of impact plates, each of which comprises a plurality of channels (11) passing through the impact plate. With reference to the flow direction of the compressed air containing condensed water, each channel (11) comprises an upstream channel (111) and a downstream channel (112). The upstream channel (111) comprises a channel inlet (1111), the downstream channel (112) comprises a channel outlet (1121), and adjacent upstream channels (111) form an impact portion (12). In at least some impact plates, baffles (13) are provided between adjacent downstream channels (112), the baffles (13) are opposite to the impact portion (12), and the baffles (13) between different impact plates are staggered, and each baffle (13) extends out of the channel outlet (1121); The channels (11) of adjacent impact plates are staggered so that the channels (11) of multiple impact plates constitute a flow channel, and in adjacent impact plates, the channel outlet (1121) of the upstream impact plate faces the impact portion (12) of the downstream impact plate, and the channel inlet (1111) of the downstream impact plate faces the baffle (13) of the upstream impact plate and is separated by the baffle (13).

2. The impact plate assembly according to claim 1, wherein: The plurality of impact plates include a rear impact plate (102) located at the most downstream, and except for the rear impact plate (102), some or all of the impact plates are provided with the baffle (13), the channels (11) of all the impact plates are arranged in an array, and the baffle (13) is located between the channels (11) in adjacent rows; And / or, among all the impact plates, the channels (11) of at least some of the impact plates are inclined downward relative to the flow direction of the compressed air containing condensed water.

3. The impact plate assembly according to claim 2, wherein: The multiple impact plates include a head-end impact plate (101) located at the most upstream, the channel (11) of the head-end impact plate (101) has an inclination angle α relative to the flow direction of the compressed air containing condensed water, and the channels (11) of the other impact plates have an inclination angle β relative to the flow direction of the compressed air containing condensed water, α>β; or α<β, or α=β.

4. The impact plate assembly according to claim 3, wherein: In the case of α>β, 15 degrees ≤ α ≤ 45 degrees.

5. The impact plate assembly of claim 1, wherein: The plurality of impact plates include a first-end impact plate (101) located at the most upstream end, the number of channels of the first-end impact plate (101) being greater than the number of channels of each of the other impact plates, and / or the sum of the flow areas of the channels (11) of each of the other impact plates being greater than or equal to the sum of the flow areas of the channels of the first-end impact plate (101).

6. The impact plate assembly of claim 5, wherein: The number of channels of each other impact plate is 1 / 2 to 1 / 6 of the number of channels of the first end impact plate (101), and / or the number of channels of the other impact plates is equal.

7. The impact plate assembly of claim 5, wherein: The ratio of the sum of the flow areas of the channels of each other impact plate to the sum of the flow areas of the channels of the first-end impact plate is A, 1≤A≤1.

2.

8. The strike plate assembly of claim 1, wherein: The multiple impact plates include a first-end impact plate (101) located at the most upstream, the number of channels of the first-end impact plate (101) is greater than the number of channels of the other impact plates, and the ratio of the sum of the flow areas of the channels of each other impact plate to the sum of the flow areas of the channels of the first-end impact plate is B, and 0.8≤B<1.

9. The impact plate assembly according to any one of claims 1 to 8, wherein: The baffle (13) comprises a baffle body (131) and baffle sides (132), wherein the baffle body (131) extends toward the channel entrance (1111), and the baffle sides (132) extend toward both sides of the baffle body (131) to increase the area of ​​shielding the channel (11) entrance.

10. The strike plate assembly of claim 9, wherein: The impact plate includes an impact plate body (14), and the baffle side (132) is parallel to the impact plate body (14); Alternatively, the baffle side (132) is curved toward the impact plate body (14) in an arc shape; Alternatively, in at least one impact plate, a portion of the baffle side edge (132) is parallel to the impact plate body (14), and another portion of the baffle side edge (132) is curved toward the impact plate body (14) in an arc shape.

11. The impact plate assembly according to any one of claims 1 to 8, wherein: In adjacent impact plates, the channel outlet (1121) of the upstream impact plate includes an outlet flange (1122) extending toward the outside of the channel (11), and the channel inlet (1111) of the downstream impact plate includes an inlet flange (1112) extending toward the outside of the channel inlet, the outlet flange (1122) is separated from the inlet flange (1112) to form an airflow channel, and the two extend in opposite directions.

12. The strike plate assembly of claim 11, wherein: The impact plate comprises an impact plate body (14), and the outlet flange (1122) and the inlet flange (1112) are parallel to the plane where the respective impact plate bodies (14) are located; Alternatively, the outlet flange (1122) and the inlet flange (1112) are bent in an arc shape toward the respective impact plate bodies (14); Alternatively, in at least adjacent impact plates, a portion of the outlet flange (1122) and the inlet flange (1112) are parallel to the respective impact plate bodies (14), and another portion of the outlet flange (1122) and the inlet flange (1112) are curved toward the respective impact plate bodies (14).

13. An impact-type water-gas separator, characterized in that: The invention comprises a shell and an impact plate assembly (10) according to any one of claims 1 to 12, wherein the shell (20) comprises a separation zone (201), a water collection zone (202) connected to the separation zone (201), an air outlet (203) and an air inlet (204) connected to the interior of the separation zone (201) and the exterior of the shell (20); the impact plate assembly (10) is located in the separation zone (201).

14. The impact-type water-gas separator according to claim 13, characterized in that: The impact-type water-gas separator comprises a controller, a liquid level sensor (30) arranged in the water collection area (202), and a drain valve (40) in communication with the water collection area (202); when the liquid level in the water collection area (202) is equal to the water level detected by the liquid level sensor (30), the controller controls the drain valve (40) to stop draining water after draining for a preset time, so that a preset amount of water remains in the water collection area (202); Alternatively, the controller controls the drain valve (40) to drain water at preset time intervals, and when the liquid level in the water collection area (202) is equal to the liquid level detected by the liquid level sensor (30), controls the drain valve (40) to stop draining water and leaves a preset amount of water in the water collection area (202); Alternatively, the impact-type water-gas separator includes a controller, a first liquid level sensor (30) and a second liquid level sensor arranged in the water collection area, and a drain valve connected to the water collection area (202); the controller controls the drain valve (40) to drain water when the liquid level in the water collection area (202) is equal to the liquid level detected by the first liquid level sensor, and controls the drain valve (40) to stop draining water when the liquid level in the water collection area is equal to the liquid level detected by the second liquid level sensor.

15. The impact-type water-gas separator according to claim 13 or 14, characterized in that: The shell (20) comprises an upper shell (205) and a lower shell (206); the upper shell (205) is provided with the separation area (201) and the air outlet (203); the lower shell (206) is assembled with the upper shell (205) to enclose the water collection area (202).

16. A water-cooled air compressor unit, characterized in that: The invention comprises a heat exchanger (200), a secondary main unit (300) and an impact-type water-gas separator (100) according to any one of claims 13 to 15, wherein the heat exchanger (200) discharges compressed air containing condensed water, and the compressed air containing condensed water enters the separation zone (201) through the air inlet (204) to be separated into gas and condensed water, the condensed water flows into the water collection area (202), and the gas enters the secondary main unit (300).

17. The water-cooled air compressor unit according to claim 16, characterized in that: The impact-type water-gas separator is assembled on the heat exchanger (200) as the cold end head of the heat exchanger, so that the air inlet (204) is connected to the interior of the heat exchanger, and the air outlet (203) is connected to the inlet of the secondary host (300).

18. The water-cooled air compressor unit according to claim 16, characterized in that: The water-cooled air compressor unit comprises a unit base frame (400), and the heat exchanger (200) is directly mounted on the unit base frame (400).

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